/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.util.ntlm;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import cgl.narada.util.Base64;

/**
 * Title:
 * Description:
 * Company:
 * @author John Yin
 */

public class NTLMType1Message extends NTLMMessage{

    private String m_domain = null;
    private String m_host   = null;

    /**
     * -----------------------------------------------------------------
     */
    public NTLMType1Message(String domain,String host) {
        m_domain = domain;
        m_host   = host;
    }

    /**
     * -----------------------------------------------------------------
     */
    public String exportBase64() throws IOException {
        byte[] bytes = export();
        return Base64.encodeBytes(bytes);
    }

    /**
     * -----------------------------------------------------------------
     */
    public byte[] export() throws IOException {
        byte[] common = super.export();

        ByteArrayOutputStream output = new ByteArrayOutputStream();

        int hostOffset = 32;
        int domainOffset = hostOffset + m_host.length();

        output.write(common);
        output.write(0x01);    // type field.
        output.write(0); output.write(0); output.write(0); // 3 zeros

        // This was documented on web site.  However other valaues were used.
        output.write(0x03); output.write(0xb2);    // flags: 0xb203
        output.write(0); output.write(0);

        /*
        // these values are captured from IE 5.5 <=> ISA.
        output.write(0x07); output.write(0xb2);
        output.write(0x08); output.write(0xa0);
        */

        writeLenOffset(m_domain.length(),domainOffset,output);
        output.write(0); output.write(0);

        writeLenOffset(m_host.length(),hostOffset,output);
        output.write(0); output.write(0);

        output.write(m_host.toUpperCase().getBytes());
        output.write(m_domain.toUpperCase().getBytes());

        return output.toByteArray();
    }
}
